Crosshead



I R U mp RA Aw s Mm l Feb. 5 1924.

2 Sheets-$heet 1 Filed Dec. 21 1921 Feb. 5;, 1924. v

J-O. M ARTHUR GROS SHEAD Filed DeC- 21. 1921 2 Sheets-Sheet 2 Patented Feb. 5, 1924.

iaezass JOHN IVJYCAIRIIIJETUR 0F PHILADELPHIA, PENNSYLVANIA.

CBOSSHEAD.

Application filed December 21, 1921. -Seria1 No. 523,930.

To all whom it may concern:

Be it known that 1, JOHN O. MOARTHUR,

citizen of the United States, residing at ,apertures in the liners,

Philadelphia, in thecounty of Philadelphiaand State of Pennsylvania, have invented certain new and useful Improvements in Crossheads, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to crossheads and has for its object toprovide a crosshead so constructed that its shoes may be easily and .quickly adjusted for taking up lateral or vertical wear without disassembling the crosshead or removing the crosshead from the crosshead guides. Also to take up the lateral and vertical wear by removing a .liner froinbetween each pair of crosshead shoes, bending the liner and interposing the same while in its right angled shape between the outer faces of the shoes and the crosshead plates with one of their flanges engaging the upper and lower edges of the crosshead plates and holding the shoes spaced from the upper and lower edges of the crosshead plates, thereby taking up vertical wear.

A further objeotis to provide the cross-,- head shoes with angularly disposed inner sides, between which sides liners are received and held by the shoe bolts by the engagement of one of the bolts extending through the other bolts extending through elongated slots in the liners, thereby providing means whereby the liners may be removed by simply loosening the bolts and removing one bolt. The angled position of the lateral wear liners, allowing the liners to be easily removed without hindrance from an adjacent mechanism, especially when used in connection with locomotives.

With the above and other objects in view the invention resides in the combination and arrangement of parts, as hereinafter set forth, shown in the drawings, described and claimed, it being understood that changes in the precise embodiment of the invention may bev made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings Figure 1 is a side elevation of the crosshead showing the same in crosshead guides.

Figure 2 is a top plan View of the cross head.

Figure 3 is a vertical sectional view taken on line 33 of Figure 1, showing the crosshead in end elevation with the connecting rod removed. I

Figure 1 is a vertical longitudinal sectional view through the crosshead taken'on line H of Figure 2, and showing the crosshead guides in section.

Figure 5 is an enlarged detail sectiona View taken on line 55 of Figure 1.

Figure 6 is a perspective view of one of the centrally disposed liners adapted to be removed for taking up the lateral wear.

Figure 7 is a perspective view of one vertical wear and maintaining the crosshead plates in normal position.

Referring to the drawings, the numerals 1 and 2 designate upper and lower crosshead guides, which guides are in parallel relation to each other, and 3 a crosshead movable between said guides. The crosshead is of the type used in connection with locomotives and consequently is of considerable weight and size, and the type shown is over two feet long and the other parts on the substantially same scale, hence it will be seen that the weight of the crosshead is considerable and that when lateral or vertical wear developes it involves considerable labor to disassemble the parts and renew the shoes 4. To overcome this disadvantage and to provide means whereby the lateral or vertical motion or wear may be taken up, the shoes are formed in two sections as shown, which sections are provided with horizontally disposed shoulders worn on their faces 11 and the flanges 99.. also become worn, also the guides becomeworn to a certain degree, and when this takes place a vertical and lateral movement developes 1n the crosshead. To overcome this difficulty the shoes are constructed with their inner faces 12 angularly disposed and in parallel relation and spaced from each other.

liners at one end are provided with apertures 14-, through which the end bolts 15 of, the outer liners utilized for taking up the Disposed between the inner faces 12 are angularly disposed liners 13, WVlllCl'l I,

iii)

pass. Liners 13 are also provided with elongated slots 16, which slots receive the bolts 17 which pass through the shoes 4. Bolts 15 and 17 also pass through vertically elongated apertures 18 in the crosshead plates 8, which elongated apertures allow a slight vertical movement to the bolts 15 and 17, also to the shoes 14 when the bolts are loosened, thereby allowing the liners 13, when removed from between the adjacent faces 12 and bent to form the right angled portions 19, to be interposed between the inner faces of the crosshead plates 8 at their lower and upper ends and with their flanges 19 in engagement with the shoulders 5 of the shoes 4 and in engagement with the upper and lower ends of the crosshead plates 8. Thus it will be seen that when sufficient wear, laterally and vertically, takes place, that liners may be removed from between the shoes, thereby allowing the shoes to move inwardly, and said liners can be placed as above described for taking up the vertical Wear. It will be noted that any number of liners may be placed between the shoes 4 initially and that as they are removed from between the shoes and placed outside thereof, that even though the shoes are moved inwardly towards each other the crosshead plates 8 need not move. It will also be seen that lateral and vertical wear may be easily and quickly taken up without disassembling the crosshead, and all that is necessary to do is to loosen the bolts 16 and 17, remove the bolts 15 and then remove the necessary liners from between the adjacent face 12 of the shoes 4. By disposing the liners 13 angularly, a groove or ridge will not be formed on the crosshead guides 1 and 2 and the liners 13 may be easily and quickly removed. p

The crosshead plates 8 are provided with a wrist pin 20 to which a conventional form of connecting rod 21 is connected, and connected to the socket member 22 of the crosshead plates 8 by means of a pin 23 is a piston rod 24 which leads to the conventional form of piston disposed in a cylinder.

The bolts 15 and 17 are shown as passing through elongated apertures 18 inthe crosshead plates, however it is obvious that the same result could be obtained by providing the crosshead shoe sections 4 with elongated apertures for the reception of the bolts.

The invention having been set forth what is claimed as new and useful is 1. A crosshead comprising spaced crosshead plates, spaced crosshead shoes carried by said plates and having crosshead guide channels, said crosshead shoes having portions disposed between the crosshead plates and portionsoverlying the ends of the crosshead plates, bolts extending through the crosshead shoes and the crosshead plates, and removable angularly shaped liners disposed between the shoes and the plates and having portions overlying the ends of the plates.

2. 'A crosshead comprising spaced crosshead plates, spaced crosshead guide engaging shoes disposed between the plates and having guide receiving channels, said shoes overlying the edges of the plates, and removable angularly shaped liners disposed between the plates and the shoes and over lying the edges of the plates in engagement with the overlying portions of the shoe.

3. A crosshead comprising spaced crosshead plates, crosshead guide engaging shoes disposed between the plates, removable angularly shaped liners interposed between the inner faces of the plates and the adjacent faces of the shoes, said last named liners overlying the edges of the plates, said shoes having portions overlying the edges of the plates and bolts extending through elongated apertures in the plates, the liners and shoes.

4. A crosshead comprising spaced cross head plates having elongated apertures adjacent their upper end lower edges, spaced crosshead shoes disposed between the upper and lower ends of the plates, removable angularly shaped liners disposed between the outer faces of the shoes and the plates and overlying the upper and lower edges of the plates, shoulders carried by the shoes and overlying the upper edges of the plates,

and bolts extending through the apertures in the plates and'through the liners a'ndshoes.

5. A crosshead plates, crosshead shoes carried by said plates, bolts extending through said plates and said shoes, removable liners interposed between the adjacent faces of the shoes and provided with an aperture positioned for the reception of one of the end bolts and an elongated slot through one end thereof the shanks of the other bolts.

6. A crosshead comprising, crosshead plates, crosshead shoes carried by said plates, bolts extending through said plates and said shoes, the adjacent faces of said shoes being angularly disposed and in par: allel relation to each other, removable liners interposed between the adjacent faces of the shoes and provided with an aperture for the reception of one of the bolts and with elongated slots extending entirely through their ends for the reception of the other bolts.

In testimony whereof I'hereunto signature.

extending entirely .ioHN o. MCARTHUR.

comprising crosshead.

for the reception or. 

